Spy is an ability exclusive to Jeff. When used in battle, it will display the foe's attack and defense stats, alongside one of their PSI weaknesses. It can also be used to steal items from enemies. It is very useful when hunting for "1/128" items and defeating the enemy is unnecessary. Note that if you don't get an item by spying the first time, the enemy most likely does not have one at all.
- Spy is the Earthbound equivalent to the Check command used by Lloyd in EarthBound Beginnings and the Sniff command used by Boney in Mother 3 .